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Previous issue date: 2014-08-15 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / A disposi??o final de res?duos s?lidos urbanos em ?reas inadequadas, sem uma infraestrutura que atenda as medidas de prote??o sanit?ria e ambiental, pode resultar na contamina??o ambiental. Para tanto uma das alternativas para minimizar os impactos decorrentes da disposi??o inadequada de res?duos s?lidos em lix?es ? a estabiliza??o da ?rea mediante o isolamento do maci?o de res?duos com implanta??o de um sistema de cobertura de solo adequado e finalizada por uma camada para crescimento vegetal. Neste contexto, o presente estudo objetivou avaliar a qualidade do solo constru?do na ?rea de um lix?o desativado da regi?o semi?rida tropical a fim de auxiliar o processo de recupera??o dessas ?reas. A ?rea de estudo est? localizada no semi?rido tropical no munic?pio de S?o Jo?o do Sabugi/RN. Foram coletadas amostras de solo na ?rea de lix?o e em mata nativa como padr?o de refer?ncia de qualidade. Aos quais foram submetidas ?s analises dos atributos f?sicos (densidade de part?culas, densidade do solo, granulometria e porosidade total), atributos qu?micos (pH, K+ e Na+ , Ca2+ , Mg2+ e Al3+ troc?veis, acidez potencial, f?sforo dispon?vel, soma de bases, CTC, satura??o por bases, satura??o por Al, satura??o por Na+ e rela??o de adsor??o de s?dio, carbono org?nico total e nitrog?nio total) e os teores total e sol?vel de metais pesados (Mn, Pb, Zn, Cd, Cu, Mo, Co, Cr, Ba e Ni). As diferen?as entre os atributos f?sicos e qu?micos do solo natural e constru?do sugerem redu??o da qualidade do solo na ?rea desativada do lix?o devido a aus?ncia de mecanismos de prote??o ambiental e sanit?ria, bem como defici?ncias no processo de constru??o do solo ap?s a desativa??o da ?rea do lix?o. Al?m, de que a aus?ncia da camada de impermeabiliza??o superior do maci?o de res?duo permitiu a transfer?ncia vertical e consequente acumula??o de metais pesados no solo constru?do para revegeta??o. Desta forma, as defici?ncias detectadas no processo construtivo do solo apontam para a necessidade de interven??o no sentido de aproximar ? condi??o de solo constru?do a condi??o de solo natural, visando acelerar o processo de recupera??o do ecossistema local. / The final disposal of municipal solid waste in unsuitable areas without an infrastructure
that meets the health measures and environmental protection, coupled with the lack of
technical criteria in phase and decommissioning of the dump can promote environmental
degradation. Alternatively to minimize the impacts of this activity for the stabilization of
the area by isolating the massive waste with implementation of an adequate and finished
by a layer of soil for plant growth final cover system. In this context, the present study
aimed to evaluate the quality of the final cover in the area of a disabled dump the tropical
semi-arid region in order to assist the process of recovery of these areas. The study area
is located in the tropical semi-arid region in S?o Jo?o do Sabugi /RN. Soil samples were
collected in the dump area and bushland as a benchmark of quality. To which they were
subjected to analysis of physical attributes (particle density, bulk density, grain size and
porosity), chemical properties (pH, K
+
, Na+
, Ca2 +
, Mg2 +
and Al3 +
exchangeable, potential
acidity, available phosphorus, sum of bases, CEC, base saturation, aluminum saturation,
saturation Na + and adsorption ratio sodium, total organic carbon and total nitrogen) and
total and soluble concentrations of heavy metals (Mn, Pb, Zn, Cd, Cu, Mo, Co, Cr, Ba
and Ni). The differences between physical and chemical soil under native forest and final
cover showing reduction of soil quality in the area off to the dump, which hinders the
development of native vegetation and the recovery of the area. The absence of superior
waterproofing to allow vertical transfer between the solid waste and the final cover
promoted enrichment by chemical elements and heavy metals in excess can impair
revegetation. Deficiencies found in the construction process of the final cover point to the
need for intervention to accelerate the process of stabilization and recovery of the area of
the local ecosystem
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/19456 |
| Date | 15 August 2014 |
| Creators | Ara?jo, Cristiane Souza de |
| Contributors | 00757656404, http://lattes.cnpq.br/1431958912117459, Biondi, Caroline Miranda, 01172686408, http://lattes.cnpq.br/8326756664758702, Lopes, R?gia L?cia, 37956094453, http://lattes.cnpq.br/8562147942949637, Becker, Vanessa, Cunha, Karina Patr?cia Vieira da |
| Publisher | Universidade Federal do Rio Grande do Norte, PROGRAMA DE P?S-GRADUA??O EM ENGENHARIA SANIT?RIA, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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